Patents by Inventor David Towne

David Towne has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 12142890
    Abstract: Embodiments of the present disclosure include optical transmitters and transceivers with improved reliability. In some embodiments, the optical transmitters are used in network devices, such as in conjunction with a network switch. In one embodiment, lasers are operated at low power to improve reliability and power consumption. The output of the laser may be modulated by a non-direct modulator and received by integrated optical components, such as a modulator and/or multiplexer. The output of the optical components may be amplified by a semiconductor optical amplifier (SOA). Various advantageous configurations of lasers, optical components, and SOAs are disclosed. In some embodiments, SOAs are configured as part of a pluggable optical communication module, for example.
    Type: Grant
    Filed: January 31, 2023
    Date of Patent: November 12, 2024
    Assignee: ARISTA NETWORKS, INC.
    Inventors: Alexey Kovsh, David Towne, Peter Parkinson, Andreas Bechtolsheim
  • Patent number: 12063064
    Abstract: A method for managing optical transceivers includes obtaining laser measurements for a laser operating in an optical transceiver in a network device, obtaining a failure profile for the laser, making a first determination that the laser measurements match the failure profile, and based on the first determination, initiating a remediation action for the optical transceiver.
    Type: Grant
    Filed: March 16, 2023
    Date of Patent: August 13, 2024
    Assignee: Arista Networks, Inc.
    Inventors: Alexey Kovsh, David Towne
  • Publication number: 20230231358
    Abstract: Embodiments of the present disclosure include optical transmitters and transceivers with improved reliability. In some embodiments, the optical transmitters are used in network devices, such as in conjunction with a network switch. In one embodiment, lasers are operated at low power to improve reliability and power consumption. The output of the laser may be modulated by a non-direct modulator and received by integrated optical components, such as a modulator and/or multiplexer. The output of the optical components may be amplified by a semiconductor optical amplifier (SOA). Various advantageous configurations of lasers, optical components, and SOAs are disclosed. In some embodiments, SOAs are configured as part of a pluggable optical communication module, for example.
    Type: Application
    Filed: January 31, 2023
    Publication date: July 20, 2023
    Inventors: Alexey Kovsh, David Towne, Peter Parkinson, Andreas Bechtolsheim
  • Publication number: 20230224031
    Abstract: A method for managing optical transceivers includes obtaining laser measurements for a laser operating in an optical transceiver in a network device, obtaining a failure profile for the laser, making a first determination that the laser measurements match the failure profile, and based on the first determination, initiating a remediation action for the optical transceiver.
    Type: Application
    Filed: March 16, 2023
    Publication date: July 13, 2023
    Inventors: Alexey Kovsh, David Towne
  • Patent number: 11632170
    Abstract: A method for managing optical transceivers includes obtaining laser measurements for a laser operating in an optical transceiver in a network device, obtaining a failure profile for the laser, making a first determination that the laser measurements match the failure profile, and based on the first determination, initiating a remediation action for the optical transceiver.
    Type: Grant
    Filed: June 4, 2020
    Date of Patent: April 18, 2023
    Assignee: Arista Networks, Inc.
    Inventors: Alexey Kovsh, David Towne
  • Patent number: 11594854
    Abstract: Embodiments of the present disclosure include optical transmitters and transceivers with improved reliability. In some embodiments, the optical transmitters are used in network devices, such as in conjunction with a network switch. In one embodiment, lasers are operated at low power to improve reliability and power consumption. The output of the laser may be modulated by a non-direct modulator and received by integrated optical components, such as a modulator and/or multiplexer. The output of the optical components may be amplified by a semiconductor optical amplifier (SOA). Various advantageous configurations of lasers, optical components, and SOAs are disclosed. In some embodiments, SOAs are configured as part of a pluggable optical communication module, for example.
    Type: Grant
    Filed: July 24, 2020
    Date of Patent: February 28, 2023
    Assignee: Arista Networks, Inc.
    Inventors: Alexey Kovsh, David Towne, Peter Parkinson, Andreas Bechtolsheim
  • Patent number: 11557875
    Abstract: Embodiments of the present disclosure include optical transmitters and transceivers with improved reliability. In some embodiments, the optical transmitters are used in network devices, such as in conjunction with a network switch. In one embodiment, lasers are operated at low power to improve reliability and power consumption. The output of the laser may be modulated by a non-direct modulator and received by integrated optical components, such as a modulator and/or multiplexer. The output of the optical components may be amplified by a semiconductor optical amplifier (SOA). Various advantageous configurations of lasers, optical components, and SOAs are disclosed. In some embodiments, SOAs are configured as part of a pluggable optical communication module, for example.
    Type: Grant
    Filed: July 24, 2020
    Date of Patent: January 17, 2023
    Assignee: ARISTA NETWORKS, INC.
    Inventors: Alexey Kovsh, David Towne, Peter Parkinson, Andreas Bechtolsheim
  • Publication number: 20220320826
    Abstract: Embodiments of the present disclosure are directed to a semiconductor optical amplifier including a semiconductor-based gain medium configured to receive a drive current and a variable-width waveguide coupled to the in the semiconductor-based gain medium, the variable-width waveguide including a plurality of narrow width regions and a plurality of wide width regions positioned alternately along a longitudinal axis of the waveguide. The variable-width waveguide further includes a plurality of transition regions having an adiabatically varying widths. Each transition region connects adjacent ones of the plurality of narrow width and width regions and the waveguide has a reduced drive current density in the plurality of wide width regions relative to the drive current density in the plurality of narrow width regions.
    Type: Application
    Filed: April 2, 2021
    Publication date: October 6, 2022
    Inventors: Alexey Kovsh, David Towne, Peter Parkinson
  • Publication number: 20220320821
    Abstract: A semiconductor optical amplifier (SOA) receives a multiwavelength input optical signal and amplifies the multiwavelength input optical signal to generate an amplified multiwavelength optical signal. A waveguide is coupled to receive the amplified multiwavelength optical signal. The waveguide includes an enhanced chromatic dispersion segment configured to increase chromatic dispersion experienced by the multiwavelength optical signal as the multiwavelength optical signal propagates through the waveguide and is amplified by the SOA. This increase in chromatic dispersion reduces noise, such as four-wave mixing noise, in the amplified multiwavelength optical signal.
    Type: Application
    Filed: April 2, 2021
    Publication date: October 6, 2022
    Inventors: Alexey Kovsh, David Towne, Peter Parkinson
  • Publication number: 20220029379
    Abstract: Embodiments of the present disclosure include optical transmitters and transceivers with improved reliability. In some embodiments, the optical transmitters are used in network devices, such as in conjunction with a network switch. In one embodiment, lasers are operated at low power to improve reliability and power consumption. The output of the laser may be modulated by a non-direct modulator and received by integrated optical components, such as a modulator and/or multiplexer. The output of the optical components may be amplified by a semiconductor optical amplifier (SOA). Various advantageous configurations of lasers, optical components, and SOAs are disclosed. In some embodiments, SOAs are configured as part of a pluggable optical communication module, for example.
    Type: Application
    Filed: July 24, 2020
    Publication date: January 27, 2022
    Inventors: Alexey Kovsh, David Towne, Peter Parkinson, Andreas Bechtolsheim
  • Publication number: 20220029380
    Abstract: Embodiments of the present disclosure include optical transmitters and transceivers with improved reliability. In some embodiments, the optical transmitters are used in network devices, such as in conjunction with a network switch. In one embodiment, lasers are operated at low power to improve reliability and power consumption. The output of the laser may be modulated by a non-direct modulator and received by integrated optical components, such as a modulator and/or multiplexer. The output of the optical components may be amplified by a semiconductor optical amplifier (SOA). Various advantageous configurations of lasers, optical components, and SOAs are disclosed. In some embodiments, SOAs are configured as part of a pluggable optical communication module, for example.
    Type: Application
    Filed: July 24, 2020
    Publication date: January 27, 2022
    Inventors: Alexey Kovsh, David Towne, Peter Parkinson, Andreas Bechtolsheim
  • Publication number: 20210384969
    Abstract: A method for managing optical transceivers includes obtaining laser measurements for a laser operating in an optical transceiver in a network device, obtaining a failure profile for the laser, making a first determination that the laser measurements match the failure profile, and based on the first determination, initiating a remediation action for the optical transceiver.
    Type: Application
    Filed: June 4, 2020
    Publication date: December 9, 2021
    Inventors: Alexey Kovsh, David Towne